Question

Помогите пожалуйста!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

Объяснение:

1) $(m_1 + m_2) * V = m_1 * v_1 - m_2 * v_2$

$V = \dfrac{m_1 * v_1 - m_2 * v*2}{m_1 + m_2} = \dfrac{238 * 4 - 78 *4.5}{238 + 78} = 1.90~m/s$

2)

$p_1 = m_1 * v_1 = 8.6 * 9 = 77.4$

$p_2 = m_2 * v_2 = 2.3 * 2 = 4.6$

$p = p_1 - p_2 = 72.8$

$V_1 = v_1 - 3 = 6$

$P_1 = m_1 * V_1 = 8.6 * 6 = 51.6$

$P = m_2 * V$

$p' = |P_1 - m_2*V| = p$

$V = \dfrac{|p - P_1|}{m_2} = \dfrac{|72.8 - 51.6|}{2.3} = 9.22$